Power up and create moving wow with the K'NEX imagine power & play 50 23012 motorized building set. This set brings your models to life with a motor and over 525 classic scale K'NEX rods and connectors to build and move anything you can imagine. Using the included step-by-step color-coded instructions to build 50 different models. Half of them include the motor for life-like movement! models range in difficulty so any level Builder can succeed in creating a carousel, rescue chopper, basketball game and more! and once the Builder is done, use the re-usable storage container for builds in progress, or to hold the K'NEX rods and connectors. Most models can be built one at a time. Recommended for builders 7 and up. Motor requires 2 "AA" batteries which are not included. K'NEX is committed to American design and manufacturing and all rods and connectors are responsibly made at a landfill-free, zero-waste facility in hatfield, Pennsylvania.